Home / 90,296.19-135,319.74-68,085.15

Finding the Fourth Proportional to 90,296.19, 135,319.74 and 68,085.15

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Solution

The fourth proportional to 90,296.19, 135,319.74 and 68,085.15 is: 102,033.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,296.19 : 135,319.74 = 68,085.15 : x
  2. Step 2: Convert to fraction form
    90,296.19/135,319.74 = 68,085.15/x
  3. Step 3: Cross multiply
    90,296.19x = 135,319.74 × 68,085.15
  4. Step 4: Simplify right side
    90,296.19x = 9,213,264,795.86
  5. Step 5: Solve for x
    x = 9,213,264,795.86/90,296.19
  6. Step 6: Final answer
    x = 102,033.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.